Switching from Dexcom G6 to G7
Switching from Dexcom G6 to G7 leaves most people with sensors they can't use — the two systems aren't cross-compatible, and there's no transmitter to carry over. Here's what changes, and what the leftover boxes are actually worth.
Your G6 sensors won't work with a G7
The G7 has the transmitter built into each sensor, so there's nothing to pair a G6 sensor with. They don't work together in either direction. Whatever G6 stock you have when you switch stays unusable.
Dexcom stopped producing G6 sensors after 1 July 2026, which is why so many people are changing over at the same time rather than when their own supplies ran out.
Can I use my leftover G6 sensors with the G7?
No. The G7 combines the sensor and transmitter into a single unit, so there's no separate transmitter and no way to pair a G6 sensor with G7 hardware. They aren't cross-compatible in either direction. Any G6 sensors left when you switch stay unusable unless you go back to G6 hardware.
What happens to my old G6 transmitter?
Nothing useful. G6 transmitters last about 90 days and get moved between sensors; the G7 has no equivalent because the transmitter is inside each sensor. An in-date, sealed G6 transmitter still has resale value even though it's no longer any use to you.
Is Dexcom discontinuing the G6?
Dexcom stopped producing G6 sensors after 1 July 2026, so supply winds down from here. That's why so many people are switching at once rather than when their own supplies ran out — and why a lot of unused G6 stock is sitting in cupboards right now.
What actually changes when you switch?
The two differences people notice first are the built-in transmitter and the warm-up: G6 takes about two hours to warm up, G7 around 30 minutes. Beyond that, it's a different app and a different insertion. Your prescriber or diabetes educator is the right person to walk you through the rest — we're not the ones to advise on the switch itself.
Switching from Dexcom G6 to G7 with Omnipod 5 — does that work?
Omnipod 5 compatibility has been rolling out for G7, but which combinations work depends on your pod generation, your controller or phone, and the software version you're on. Check with Insulet and Dexcom for your specific setup rather than taking anyone's word for it, including ours. What we can tell you is that the changeover leaves people with G6 sensors they can't use.
What should I do with unused G6 sensors?
Don't bin them. Sealed, in-date G6 sensors are worth real money — 3-packs are among the higher-value items we buy — and there are people paying out of pocket who need exactly what's sitting in your cupboard. If they're unopened and the date hasn't passed, they're worth having valued before they go in the rubbish.
What leftover G6 stock is worth
Sealed G6 3-packs are among the higher-value items we buy, and in-date transmitters are worth having valued too. Most people don't realise and throw them out with the packaging — which is a genuine waste, because someone paying out of pocket needs exactly what's in that cupboard.
Here's what we pay for Dexcom supplies, and how close to the expiration date they can still be sold. If you switched pumps at the same time we also buy Omnipod pods and Medtronic pump supplies. Not sure whether yours qualify? Here's what can and can't be sold.
General information, not medical or device advice. Compatibility depends on your specific hardware and software versions — check with Dexcom, Insulet and your care team before changing anything about how you manage your diabetes.